Improvement in windmills



n, L. osBoRNQ WIND-MILL.

No.170,640 Patented Nov. 30,1875.

W A N v ATTURNEYS.

N-PET S,- FHOT OGRAPH WASHINGTON, D C.

plane of the wheel.

UNITED STATES DAVID L. OSBORN, on

PATENT OFFICE.

ASHLAND, NEBRASKA.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent No. 170,640, dated November30, 1875; application filed August 21, 1875.

To all whom it may concern:

Be it known that I, DAVID L. OSBORN, of Ashland, in the county ofSaunders and State of Nebraska, have invented a new and ImprovedWindmill, of which the following is a specification The inventionconsists in vanes hinged by straps to arms that are outwardly inclinedfrom hub, and in the mode of combining arms, rods, and hub-extension, ashereinafter described.

Figure 1. is a side elevation of the wheel and tail-vane, and a sectionof stand and turn-table. Fig. 2 isaplan view, and Fig. 3 is a frontelevation, of the wind-wheel.

Similar letters of reference indicate corresponding parts.

A represents the wheel-vanes, which are pivoted or hinged to the arms Bby straps C, said arms being inclined from the hub outward toward thewind, so that the vanes, being thrown a little to the back of the armsby their hinges, are made both tangential and inclined forward or towardthe wind, in a mannor by which the vanes approximate the form of a screwto a greater extent than when arranged exactly radial and in thetransverse This forward inclination of the arms also allows of bracingthem by the rods D and the extension E of the shaft.

The vanes are connected to the sliding spider F on the wheel-shaft, andthis spider is connected by toggle-bars G and H with the elbow-lever I,on thelong arm of which isan adjustable weight, J, which, by thisconnection, expends its power in keeping the vanes turned sidewise tothe wind.

The effect of the bend of the lever I, and the relative arrangement ofthe connectingrods G H with it, is to increase the resistance of theweight as it rises by increased power of the wind, so that the regulatoris graduated to a considerable extent to the force of the wind, making aregulator of great merit.

A cord, K, is attached to the bars G H, and extended down through thehub of the turntable for lifting the weight up when it is desired tostop the wheel.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent- B, the latter being inclined outwardly from the hub,as and for the purpose specified.

2. The combination of the inclined arms B, rods D, and the extension Eof the hub, substantially as specified.

DAVID L. OSBORN. Witnesses:

JAcoB A. JURY, DAVID DEAN.

l. The vanes A, hinged by straps to arms

